The Zamp RZ-65D Helmet is a premium dirt helmet with new Snell SA2020 rating on a lightweight large carbon fiber weave. This model also packs awesome featuresSnell SA2020 CertificationLarge weave carbon mix shell for super lightweight shellAerodynamics optimized for improved stability using large front lower spoilerLow profile top air attachment is included in box, with 4 screws that allow you to set up your helmet. Low adapter is recommended; Top air system allows you to run natural air, forced air, or air plugsPlush fire retardant performance fit removable/washable ultra-soft interior with EPS chin bar foam Z-20 series 3mm clear shield with tear off posts at 12.25 inch center posts using banana style tear offs Hydration hole/plug front and center in chin bar with easy set up. Remove plug to install accessory hydration kit.Ear cups and ear pads to give driver quieter environment to hear what you need to hear. Easy integration of communication equipment with cheekM6 inserts for head & neck restraint